Journal of perioperative practice · 2026
Impact of short-duration prewarming on postoperative hypothermia in patients undergoing open abdominal surgery under combined epidural and general anaesthesia: A prospective observational study.
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Shetty Aniketh Kumar, Nagesh Savan Kumar, Dhas A Blessing
Аннотация
CONTEXT: Open abdominal procedures under combined general and epidural anaesthesia are at high risk of thermal loss due to prolonged operating times and significant exposure of internal organs.
SETTING AND DESIGN: In this prospective observational study, the effects of short-duration prewarming were assessed in participants who underwent open abdominal procedures with combined epidural and general anaesthesia.
METHODS AND MATERIALS: A total of 72 patients were observed, with 36 receiving 15 min of prewarming before surgery and 36 receiving warming only during surgery. Core temperature (tympanic) was measured with an infrared thermometer both before prewarming and at the end of surgery. The incidence of postoperative hypothermia (core temperature <36 °C) and shivering was also recorded.
STATISTICAL ANALYSIS: Chi-square test, Student's t test or Pearson χ² were used for comparisons between two groups.
RESULTS: The median temperature difference (baseline temperature - postoperative temperature) was lower in the prewarmed group (0.5 °C vs. 0.75 °C). The incidence of postoperative hypothermia and shivering was also lower in the prewarmed group than in the non-prewarmed group (22% vs. 50% and 5.56% vs. 25%, respectively).
CONCLUSION: A 15-min prewarming protocol is associated with a lower incidence of postoperative hypothermia and shivering in patients who undergo major abdominal surgery under combined general and epidural anaesthesia.
SETTING AND DESIGN: In this prospective observational study, the effects of short-duration prewarming were assessed in participants who underwent open abdominal procedures with combined epidural and general anaesthesia.
METHODS AND MATERIALS: A total of 72 patients were observed, with 36 receiving 15 min of prewarming before surgery and 36 receiving warming only during surgery. Core temperature (tympanic) was measured with an infrared thermometer both before prewarming and at the end of surgery. The incidence of postoperative hypothermia (core temperature <36 °C) and shivering was also recorded.
STATISTICAL ANALYSIS: Chi-square test, Student's t test or Pearson χ² were used for comparisons between two groups.
RESULTS: The median temperature difference (baseline temperature - postoperative temperature) was lower in the prewarmed group (0.5 °C vs. 0.75 °C). The incidence of postoperative hypothermia and shivering was also lower in the prewarmed group than in the non-prewarmed group (22% vs. 50% and 5.56% vs. 25%, respectively).
CONCLUSION: A 15-min prewarming protocol is associated with a lower incidence of postoperative hypothermia and shivering in patients who undergo major abdominal surgery under combined general and epidural anaesthesia.